Deltana is an architectural hardware manufacturer with a proven record for exceptional service and quality. Deltana inventories America's largest selection of architectural and door hardware in over nine fine finishes made from solid brass, zinc, aluminum, steel, and stainless steel. With an array of fine finishes, find hinges, bolts, bumpers and stops, ball catch, roller latches, door accessories, and home accessories that compliment your home's decor. Deltana surface bolts are designed to be mounted on the inside of a door to offer extra security.